tips - YuBa

tips

A collection of 29 posts

How Kubernetes affinity works

How Kubernetes affinity works

NodeAffinity, Pod Affinity, Taint/Toleration DEMYSTIFIED

First view of Elastic Stack

First view of Elastic Stack

Elastic stack starter kit

Easy cache your applications in Kubernetes

Easy cache your applications in Kubernetes

> There are only two hard things in Computer Science: cache invalidation and naming things. - Phil Karlton Problem How many times would you have liked caching static data that never (or at least almost never) change? A classic example are labels to show in a front-end select box. Labels in

Kubernetes Best Practices

Kubernetes Best Practices

Table of contents 0. Intro 1. Before to start 1.1 12 Factor 1.2 Lint your manifests 1.3 Liveness readiness 1.4 Scan container images 1.5 Do not use root user in your containers 2. Security 2.1 Use Pod Security Policies 2.2 Upgrade to the

Single-Node Patterns in distributed systems

Single-Node Patterns in distributed systems

Single-Node Patterns in distributed systems

Carrefour blockchain vs Coopchain

Carrefour blockchain vs Coopchain

Durante lo sviluppo di un progetto basato su blockchain, ho esplorato due aziende che attualmente sono le uniche (penso), in Italia, che hanno rilasciato in produzione la tracciabilità alimentare di alcuni prodotti tramite tecnologia blockchain. Le due aziende di cui sto parlando sono: * Coop (coopchain [https://www.coopchain.coop.it/

How to install docker CE on RHEL 7 [TESTED]

How to install docker CE on RHEL 7 [TESTED]

sudo yum install -y yum-utils \ device-mapper-persistent-data \ lvm2 sudo yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo sudo yum install -y http://mirror.centos.org/centos/7/extras/x86_64/Packages/container-selinux-2.107-3.el7.noarch.rpm sudo yum install docker-ce docker-ce-cli

Your first view of Kubernetes

Your first view of Kubernetes

PS I drew this schema over a flight during my hooliday return. Considering the fly hours (8+) i read Managing Kubernetes Operating Kubernetes Clusters of Brendan Burns and Craig Tracey (very nice book!) Ho realizzato questo mini schema durante un volo di ritorno dalle ferie dopo aver letto il libro

Easy CI for a node server on HEROKU

Easy CI for a node server on HEROKU

Easy CI for a node server on HEROKU

From monolithic to Kubernetes

docker Featured

From monolithic to Kubernetes

The aim of this mini guide is to focus on shipping your ideas and making your users happy. Kubernates is the key.

[linux] Scrape entire website with a single line command

[linux] Scrape entire website with a single line command

I've tried many online tools in order to scrape an entire website but none of them allow me to freely download all pages. Next i found the webhttrack tool for Windows/Ubuntu/Mac, it works well but needs installation. The final tested solution is a single line command... ➜ ~ wget \ --recursive

Use apt behind proxy server on Ubuntu 18.04

Use apt behind proxy server on Ubuntu 18.04

How to Set the Proxy for APT on Ubuntu 18.04 [https://www.serverlab.ca/tutorials/linux/administration-linux/how-to-set-the-proxy-for-apt-for-ubuntu-18-04/]

NVM (curl) behind corporate proxy server

NVM (curl) behind corporate proxy server

Problem Considering that NVM use curl, the problem is the same executing curl behind a corporate proxy server. curl proxy Received HTTP code 407 from proxy after CONNECT Solution Edit ~/.curlrc proxy = user:psw@host:port

Netdata | what a FREE tool! [DEMO]

Netdata | what a FREE tool! [DEMO]

Monitor your containers with netdata

Fix "Attribute meta-data#android.support is also present.." on Ionic camera preview plugin

Fix "Attribute meta-data#android.support is also present.." on Ionic camera preview plugin

Problem Attribute meta-data#android.support.VERSION@value value=(26.1.0) from [com.android.support:support-v4:26.1.0] AndroidManifest.xml:28:13-35 is also present at [com.android.support:exifinterface:25.4.0] AndroidManifest.xml:25:13-35 value=(25.4.0). Suggestion: add 'tools:replace="android:value"' to

[SOLVED] ERROR: Error response from daemon: Get https://myregistry:5000: http: server gave HTTP response to HTTPS client

[SOLVED] ERROR: Error response from daemon: Get https://myregistry:5000: http: server gave HTTP response to HTTPS client

This is a solution for both: Linux and Windows. You maybe came across this error pushing or pulling to/from a local registry, like Nexus or others. The problem is that Docker is trying to use HTTPS protocol but your registry does not support it, it accepts only HTTP connection.

Develop a chatroom using Ionic3, socket.io and Nodejs

Develop a chatroom using Ionic3, socket.io and Nodejs

Socket.io Socket.io is a Javascript library that enables real-time, bidirectional and event-based communication. Sometimes we hear that socket.io implements a web socket communication but is NOT true. Socket.io uses the WebSocket protocol to provide the interface. Generally, it is divided into two parts, both WebSocket vs

Solve "The image you uploaded was larger than the maximum file size your server allows" on NGINX+Ghost

Solve "The image you uploaded was larger than the maximum file size your server allows" on NGINX+Ghost

Simply add client_max_body_size 5M; (replace 5M with your needs) on nginx.conf Example { listen 80; .. server_name mydomani.com; client_max_body_size 5M; .. }

Use ncftpput instead of ftp for recursive uploads

Problem I came across this problem when i had the need to transfer a Wordpress site from a server to an other. So all the folder (included hidden file) needed to be recurively transferred. Ftp command is too limited and does not support recursive upload, so the solution is to

Set SASS the default style format on Angular/Ionic

Set SASS the default style format on Angular/Ionic

Angular 6+ ng config defaults.styleExts sass Ionic 4+ ionic config set defaults.styleExts sass

Execute "COPY .. FROM stdin" in postgres database

Execute "COPY .. FROM stdin" in postgres database

psql -h HOST -p PORT -f import.sql -U USER -d DEFAULTDB * HOST * PORT * USER * DEFAULTDB import.sql COPY public.mytable (id, name, surname) FROM stdin; 1 yuri bacciarini 2 marla swinger 3 tyler durden

Easy way to pass async data as a function's input

Easy way to pass async data as a function's input

Problem Pass async data (like observable) as an input of a function. Workaround

My Experience with NgRx state manager on Ionic

My Experience with NgRx state manager on Ionic

Intro In this article I will talk of my experience with NgRX, a reactive extension for Angular to manage state. I've used NgRx on Ionic with Angular2 engine. Ionic + NgRx Actions I've played the first time with NgRx on January 2018, inside a new project. It took me a couple

Static website on AWS S3 bucket (SSL secure)

Amazon web services

Static website on AWS S3 bucket (SSL secure)

Aim Set up a static website using an S3 bucket (Amazon Web Services) as a root folder. SSL certificate provided by Amazon. I'll give you step by step with a my static site https://app.pimpmychef.it Instructions First of all, go to the S3 service page on AWS console.

Set up docker Wordpress behind docker NGINX with SSL

Set up docker Wordpress behind docker NGINX with SSL

Working solution to run Wordpress using official Docker image. A step by step guide.